1. the amount of electromagnetic radiation leaving or arriving at a point on a surface

Similar word(s): glow, glowing

Definition categories: phenomenon, light

2. the quality of being bright and sending out rays of light

Similar word(s): effulgence, radiancy, refulgence, refulgency, shine

Definition categories: attribute, brightness

3. an attractive combination of good health and happiness

- the radiance of her countenance

Definition categories: state, felicity, happiness, healthiness

Sentences with radiance as a noun:

- Girt with omnipotence, with radiance crowned. — Milton.